When I was younger, I believed that getting married was something that everyone had to do when they got to a certain age (like buying a house) and that when adults had boyfriends or girlfriends, it was because they had gotten divorced and needed someone around while they looked for a new spouse and they were going to get rid of that boy/girlfriend as soon as they found one.
A childhood belief about marriage

others believed things like this
- i used to think that the term 'necking' referred to boyfriends and girlfriends who rubbed their necks togetherAnon
- I thought that to get married, your spouse had to have the same eye color as you did.Anon
- When I was younger, I believed that Priests could get married, but only to Nuns— MJF
- I used to think that nuns were God's girlfriends...— Marie
- My girlfriend believed someone who told her that chewing gum was made from dogs bones!— tony
- My mom said she had eyes in the back of her head. I looked and looked, but never found them.Anon